OK, here is the scoop. I removed the covers from my KO and tried to put them on my K4. The left cover fits to my surprise. However, the right side cover does not do to what must be a redesign of the oil tank. Or a little different placement of the tank. I was not able to snap the tabs into place as it hit by the neck of the oil fill area. Had to be very careful not to scratch my KO covers. But there is your answer. I know what you mean, those KO covers are nice looking.